Supply Controller. RT5006 Datasheet

RT5006 Controller. Datasheet pdf. Equivalent

RT5006 Datasheet
Recommendation RT5006 Datasheet
Part RT5006
Description Single Output LNB Power Supply Controller
Feature RT5006; ® RT5006 Single Output LNB Power Supply Controller with I2C Interface General Description The RT50.
Manufacture Richtek
Datasheet
Download RT5006 Datasheet




Richtek RT5006
®
RT5006
Single Output LNB Power Supply Controller with I2C Interface
General Description
The RT5006 is a highly integrated voltage regulator and
interface IC, specifically designed for supplying power and
control signals from advanced satellite Set-Top Box (STB)
modules to the Low Noise Block (LNB) down converter in
the antenna dish or to the multi-switch box.
The device consists of an independent current-mode Boost
controller and a low dropout linear regulator and the circuitry
required for 22kHz tone generation and integrates tone
detection capability, to support full one-way DiSEqCTM
communications.
All the functions and the LNB output voltages (16
programmable levels) can be controlled via the I2C bus.
The RT5006 has fault signal to serve as an interrupt for
the processor when any condition turns off the LNB
controller (over current, over temperature and under voltage
lockout). The states of these flags to the faults can be
thoroughly examined through the I2C registers.
Features
Wide Input Supply Voltage Range : 8V to 16V
Output Current Up to 700mA
Output Current Limit of 800mA with 5ms Timer
LNB Voltages (16 Programmable Levels)
±4.5% High Accuracy of LNB Voltage for 0mA to
500mA Current Output
Fault Latch for OTP, OCP, UVLO
Built-in 22kHz Tone Generator One-Way DiSEqCTM
Communication
Four Methods of 22kHz Tone Generation, via I2C
Data Bits and/or External Pin
Adjustable Rising/Falling Time via External
Capacitor
2-Wire Serial I2C Compatible Interface
RoHS Compliant and Halogen Free
Applications
LNB Power Supply and Control for Satellite Set-Top Box
Analog and Digital Satellite Receivers/ Satellite TV,
Satellite PC cards
Simplified Application Circuit
VIN
VDD
From
MCU
L1
C1
C2
C3
VA
R1 R2 R3
D1
LX
VIN BOOST
VREG
RT5006
ADD
LNB
EXTM
SDA
SCL
IRQ
PGND
TCAP
GND
L2
C4
D3
C5
D2 C7
LNB
Power
D4
C6
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5006-00 November 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek RT5006
RT5006
Ordering Information
RT5006
Package Type
QW : WQFN-20L 4x4 (W-Type)
(Exposed Pad-Option 2)
QWA : WQFN-28L 5x5 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT5006GQW
0E= : Product Code
0E=YM
DNN
YMDNN : Date Code
RT5006GQWA
RT5006
GQWA
YMDNN
RT5006GQWA : Product Number
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
20 19 18 17 16
BOOST 1
15 NC
NC
TCAP
NC
EXTM
2
3
4
5
GND
21
14 GND
13 NC
12 SCL
11 IRQ
6 7 8 9 10
WQFN-20L 4x4
28 27 26 25 24 23 22
BOOST
NC
TCAP
NC
NC
EXTM
NC
1
2
3
4
5
6
7
GND
21 NC
20 NC
19 GND
18 NC
17 NC
16 NC
29
15 NC
8 9 10 11 12 13 14
WQFN-28L 5x5
Functional Pin Description
Pin No.
Pin Name
WQFN-20L 4x4 WQFN-28L 5x5
1 1 BOOST
2, 4, 6, 13, 15,
18
2, 4, 5, 7, 13,
15 to 18, 20 to 24
NC
3 3 TCAP
5 6 EXTM
Pin Function
Track Supply Voltage to Linear Regulator. Connect to the
converter output. Use a low ESR capacitor to ensure low
voltage ripple.
No Internal Connection.
Capacitor (typ. 39nF) for Setting the Rise and Fall Time of the
LNB Output. The capacitor should not be too small to avoid
inrush current.
External Modulation Input. Used for Tone generation control.
Supply (by MCU) high level to apply a DiSEqCTM modulation
envelope that modulates an internal tone and then transfers it
symmetrically. It can also supply clock as an input for
externally modulated DiSEqCTM tone signal that is transferred
symmetrically onto output. Control the TGATE and TMODE
status for tone generation option.
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS5006-00 November 2013



Richtek RT5006
RT5006
Pin No.
Pin Name
WQFN-20L 4x4 WQFN-28L 5x5
7, 14,
8, 19,
21 (Exposed Pad) 29 (Exposed Pad)
GND
8 9 VREG
9 10 SDA
10 11 ADD
11 14 IRQ
12 12 SCL
17 25 VIN
18 26 LX
19 27 PGND
20 28 LNB
Pin Function
Analog Ground. The Exposed pad should be soldered to a
large PCB and connected to GND for maximum thermal
dissipation.
Internal Reference Output Typically. Connecting a capacitor
(typ. 0.22F) from this pin to GND.
Serial Interface Data Input/Output. Connect to VDD (typ.
3.3V to 5V) via a pull high resistor (typ. 4.7k). Connect to
MCU for I2C communication. Support I2C fast mode (typ.
400kHz) communication.
Address Select. Supply by VA for different slave address
selection. Several devices can connect to the same I2C bus
by different VA and slave address. Slave address is 0x10 for
VA = 0 to 0.7V, Slave address is 0x12 for VA = 1.3V to 1.7V,
0x14 for VA = 2.3V to 2.7V, 0x16 for VA = 3.3V to 5V.
Interrupt Request (Active High). IRQ is an open drain output
that connects to VDD (typ. 3.3V to 5V) via a pull high resistor
(typ. 4.7k). The voltage level would be pulled low and
latched when the faults (UVLO, OCP, TSD) occur. The
release condition is fault removing, as I2C enables reading
the status register.
Serial Interface Clock Input. Connect to VDD (typ. 3.3V to
5V) via a pull high resistor (typ. 4.7k). Connect to MCU for
I2C communication. Support I2C fast mode (typ. 400kHz)
communication.
Power Supply Input. A capacitor (typ. 0.1F) should be
connected to this pin. The operating voltage is 8V to 16V.
Under Voltage Lockout (UVLO) is 7.35V.
Switch Node. Connect an inductor (typ. 33H) to input and a
schottky diode to output. A RC snubber should be connected
to this pin to reduce the voltage spike.
Power Ground.
Linear Regulator Output Provides the LNB Power. It can
supply a 13V to 18V, 700mA and transmit a 600mVpp Tone
signal to LNB. It can diagnose the OCP, PNG, CAD and DIS
status by I2C.
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS5006-00 November 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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